| /** |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.oodt.cas.workflow.engine; |
| |
| //JDK imports |
| import java.util.Calendar; |
| |
| //OODT imports |
| import org.apache.oodt.cas.metadata.Metadata; |
| import org.apache.oodt.cas.workflow.engine.processor.TaskProcessor; |
| import org.apache.oodt.cas.workflow.engine.processor.WorkflowProcessorQueue; |
| import org.apache.oodt.cas.workflow.structs.PrioritySorter; |
| import org.apache.oodt.commons.date.DateUtils; |
| |
| /** |
| * |
| * Intercepts the calls to {@link TaskQuerier#getNext()} and injects |
| * StartDateTime (and potentially other met fields into the |
| * {@link TaskProcessor#getDynamicMetadata()}. |
| * |
| * @author mattmann |
| * @version $Revision$ |
| * |
| */ |
| public class MetSetterTaskQuerier extends TaskQuerier { |
| |
| private static final long WAIT_SECS=1; |
| |
| /** |
| * @param processorQueue |
| * @param prioritizer |
| */ |
| public MetSetterTaskQuerier(WorkflowProcessorQueue processorQueue, |
| PrioritySorter prioritizer) { |
| super(processorQueue, prioritizer, null, WAIT_SECS); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.apache.oodt.cas.workflow.engine.TaskQuerier#getNext() |
| */ |
| @Override |
| public TaskProcessor getNext() { |
| TaskProcessor taskProcessor = super.getNext(); |
| if(taskProcessor == null) return null; |
| Metadata met = new Metadata(); |
| met.addMetadata("StartDateTime", DateUtils.toString(Calendar.getInstance())); |
| taskProcessor.getWorkflowInstance().setSharedContext(met); |
| return taskProcessor; |
| } |
| |
| } |